Driving circuit, driving arrangement and driving method, suitable for grid feeding

• US 10,404,069 B2
• Filed: 10/27/2016
• Issued: 09/03/2019
• Est. Priority Date: 11/05/2015
• Status: Expired due to Fees

• Current Assignee: Signify Holding B.V. (Signify N.V.)
• Original Assignee: Signify Holding B.V. (Signify N.V.)
• Inventors: Maji, Goutam, Pullela, Venkata Sriiram, Cholachagudda, Mahadev, Wabale, Girish Ramdas, Poojary, Vasu
• Primary Examiner(s): Tan, Richard
• Application Number:
  US15/336,421
• Publication Number:
  US 20170133850A1
• Time in Patent Office: 1,041 Days
• Field of Search: 307 66
• CPC Class Codes: H02J 3/28 Arrangements for balancing of the load in a network by storage of energy
• CPC Class Codes: H02J 7/0024 Parallel/serial switching of connection of batteries to charge or load circuit
• CPC Class Codes: H02J 7/34 Parallel operation in networks using both storage and other dc sources, e.g. providing buffering H02J7/14 takes precedence
• CPC Class Codes: H02M 7/44 by static converters
• CPC Class Codes: H05B 45/3725 Switched mode power supply [SMPS]
• CPC Class Codes: Y02B 20/30 Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Abstract

A driving circuit for driving an appliance has a two-line power input, a first output for connection to the appliance, a second, two-line, output, an internal energy source and a switching arrangement. The switching arrangement is configurable into at least a first mode, in which the two-line power input is connected to the second, two-line, output, and the internal energy source is isolated from direct connection to the two-line power input, and a second mode in which the internal energy source is in series between a first line of the two-line power input and a corresponding first line of the second, two-line, output. The first mode is used for normal operation of an appliance and the second mode is used for grid feeding.

Claims

1. A driving arrangement for driving a set of appliances, comprising:

a set of driving circuits, wherein each driving circuit include,

a two-line power input;

a first output for connection to one of the set of appliances;

a second, two-line, output;

an internal energy source; and

a switching arrangement, wherein the second, two-line, output is coupled to the two-line power input via the switching arrangement and the switching arrangement is configurable into,

a first mode, in which the two-line power input is connected to the second, two-line, output, and the internal energy source is isolated from direct connection to the two-line power input; and

a second mode in which the internal energy source is in series between a first line of the two-line power input and a corresponding first line of the second, two-line, output;

wherein the set of driving circuits are connected together in a chain, with the second, two-line, output of one of the set driving circuits connected to the two-line power input of next one of the set of driving circuits in the chain, wherein each driving circuit is for driving a respective appliance.

2. The driving arrangement as claimed in claim 1, wherein the switching arrangement is configurable into the third mode which is a series termination mode, in which the internal energy source is in series between the first line of the two-line power input and a second line of the second, two-line, output.

3. The driving arrangement as claimed in claim 1, wherein the switching arrangement comprises:

a first switch in series between the first line of the two-line power input and the corresponding first line of the second, two-line, output; and

a second switch for connecting the internal energy store in parallel with the first switch.

4. The driving arrangement as claimed in claim 3, wherein the switching arrangement comprises:

a third switch in series between one terminal of the internal energy source and a second line of the second, two-line, output; and

a direct connection between the second line of the two-line power input and a corresponding second line of the second, two-line, output.

5. The driving arrangement as claimed in claim 1, wherein the first line of the two-line power input comprises a mains live line and a second line of the two-line power input comprises a mains neutral line.

6. The driving arrangement as claimed in claim 1, comprising a driver unit coupled to the two-line power input wherein the driver unit is adapted to:

control a supply of power to the appliance from the two-line power input or from the internal energy source; and

control charging of the internal energy source.

7. The driving arrangement as claimed in claim 1, wherein the switching arrangement is configurable into a fourth mode, which is a parallel feeding mode, in which the internal energy source is in parallel with the two-line power input and the first line of the two-line power input is not connected to the first line of the second, two-line, output.

8. An appliance unit comprising:

the appliance, such as a lighting unit; and

the driving arrangement as claimed in claim 1 for providing power to the corresponding one of the set of appliances.

9. The driving arrangement as claimed in claim 1, wherein the two-line power input of one driving circuit is connected to a mains live and neutral, with the second, two-line, output of one driving circuit connected to the two-line power input of the next one of the set of driving circuits in the chain for transmitting power through the chain.

10. A driving arrangement or an energy storage system for driving a set of appliances, comprising:

a plurality of driving circuits, wherein each of the plurality of driving circuit includes,

a two-line power input;

a first output for connection to one of the set of appliances;

a second, two-line, output;

an internal energy source; and

a switching arrangement, wherein the second, two-line, output is coupled to the two-line power input via the switching arrangement and the switching arrangement is configurable into,

a first mode, in which the two-line power input is connected to the second, two-line, output, and the internal energy source is isolated from direct connection to the two-line power input; and

a second mode in which the internal energy source is in series between a first line of the two-line power input and a corresponding first line of the second, two-line, output;

wherein the switching arrangement is configurable into a third mode which is a series termination mode, in which the internal energy source is in series between the first line of the two-line power input and a second line of the second, two-line, output;

wherein the plurality of driving circuits are connected together in a series chain, with the second-two-line output of one driving circuit connected to the two-line power input of the next driving circuit in the chain, wherein the switching arrangements are configurable into;

a normal mode wherein the switching arrangement of all driving circuits are configured to the first mode; and

a grid feeding mode wherein the switching arrangement of all driving circuits except for the driving circuit at an end of the chain are configured to the second mode and the driving circuit at the end of the chain is configured to the third mode.

11. The driving arrangement or the energy storage system as claimed in claim 10, wherein the switching arrangements are configurable into a parallel feeding mode, in which a single driving circuit is adapted to operate in a fourth mode in which the internal energy source is in parallel with the two-line power input and the first line of the two-line power input is not connected to the first line of the second, two-line, output, while other driving circuits in the chain are adapted to operate in the first mode.

12. A method of driving a set of appliances using a plurality of driving circuits, wherein each of the plurality of driving circuits includes a two-line power input, a first output for connection to a corresponding one of the set of the appliances, a second, two-line, output for connection to another driving circuit, and an internal energy source, wherein the method comprises, at different times, configuring a switching arrangement into:

a first mode, in which the two-line power input is coupled to the second, two-line, output, and the internal energy source is isolated from direct connection to the two-line power input; and

a second mode in which the internal energy source is in series between a first line of the two-line power input and a corresponding first line of the second, two-line, output;

a third mode which is a series termination mode;

wherein the plurality of driving circuits are connected together in a series chain, with the second, two-line, output of one driving circuit connected to the two-line power input of the next driving circuit in the chain, wherein the switching arrangements are configurable into;

a normal mode wherein the switching arrangement of all driving circuits are configured to the first mode; and

a grid feeding mode wherein the switching arrangement of all driving circuits except for the driving circuit at an end of the chain are configured to the second mode and the driving circuit at the end of the chain is configured to the third mode.

13. The method as claimed in claim 12, comprising configuring the switching arrangement into:

the third mode which is a series termination mode, in which the internal energy source is in series between the first line of the two-line power input and a second line of the second, two-line, output;

or

a fourth mode, which is a parallel feeding mode, in which the internal energy source is in parallel with the two-line power input and the first line of the two-line power input is not connected to the first line of the second, two-line, output.

14. The method as claimed in claim 12, further comprising controlling a supply of power to the corresponding one of the set of appliances from the two-line power input or from the internal energy source, and controlling charging of the internal energy source.